We asked them what did they do last weekend.We ask them what are they doing.I ask her what doesshe see.改错

We asked them what did they do last weekend.We ask them what are they doing.I ask her what does
she see.改错

ask后面what引导的句子作为ask的双宾语之一,是宾语从句,所以需要陈述句语序
应该更改为：
We asked them what they did last weekend.
We (should/will) ask them what they are doing
I askd her what she had seen.

We asked them what they did last weekend.
We ask them what they are doing.
I ask her what she sees.

正确的应该是这样：We asked them what they did last weekend. We ask them what they are doing. I ask her what she sees.
因为ask 可接双宾语，即ask sb sth. 此时的sth 是以what 引导的一个名词性从句做宾语，就不能再以疑问句的形式出现，而应改为陈述句的形式。